powerpc/pseries: Move hvsi support into a library
This will allow a different backend to share it
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/hvsi.h b/arch/powerpc/include/asm/hvsi.h
index ab2ddd7..91e0453 100644
--- a/arch/powerpc/include/asm/hvsi.h
+++ b/arch/powerpc/include/asm/hvsi.h
@@ -56,5 +56,39 @@
} u;
} __attribute__((packed));
+/* hvsi lib struct definitions */
+#define HVSI_INBUF_SIZE 255
+struct tty_struct;
+struct hvsi_priv {
+ unsigned int inbuf_len; /* data in input buffer */
+ unsigned char inbuf[HVSI_INBUF_SIZE];
+ unsigned int inbuf_cur; /* Cursor in input buffer */
+ unsigned int inbuf_pktlen; /* packet lenght from cursor */
+ atomic_t seqno; /* packet sequence number */
+ unsigned int opened:1; /* driver opened */
+ unsigned int established:1; /* protocol established */
+ unsigned int is_console:1; /* used as a kernel console device */
+ unsigned int mctrl_update:1; /* modem control updated */
+ unsigned short mctrl; /* modem control */
+ struct tty_struct *tty; /* tty structure */
+ int (*get_chars)(uint32_t termno, char *buf, int count);
+ int (*put_chars)(uint32_t termno, const char *buf, int count);
+ uint32_t termno;
+};
+
+/* hvsi lib functions */
+struct hvc_struct;
+extern void hvsi_init(struct hvsi_priv *pv,
+ int (*get_chars)(uint32_t termno, char *buf, int count),
+ int (*put_chars)(uint32_t termno, const char *buf,
+ int count),
+ int termno, int is_console);
+extern int hvsi_open(struct hvsi_priv *pv, struct hvc_struct *hp);
+extern void hvsi_close(struct hvsi_priv *pv, struct hvc_struct *hp);
+extern int hvsi_read_mctrl(struct hvsi_priv *pv);
+extern int hvsi_write_mctrl(struct hvsi_priv *pv, int dtr);
+extern void hvsi_establish(struct hvsi_priv *pv);
+extern int hvsi_get_chars(struct hvsi_priv *pv, char *buf, int count);
+extern int hvsi_put_chars(struct hvsi_priv *pv, const char *buf, int count);
#endif /* _HVSI_H */